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Finding the Fourth Proportional to 7,961.40, 10,995.98 and 5,304.20

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Solution

The fourth proportional to 7,961.40, 10,995.98 and 5,304.20 is: 7,325.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.40 : 10,995.98 = 5,304.20 : x
  2. Step 2: Convert to fraction form
    7,961.40/10,995.98 = 5,304.20/x
  3. Step 3: Cross multiply
    7,961.40x = 10,995.98 × 5,304.20
  4. Step 4: Simplify right side
    7,961.40x = 58,324,795.62
  5. Step 5: Solve for x
    x = 58,324,795.62/7,961.40
  6. Step 6: Final answer
    x = 7,325.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.